125434252303521 has 32 divisors (see below), whose sum is σ = 197770423603200. Its totient is φ = 69190561177920.

The previous prime is 125434252303487. The next prime is 125434252303567. The reversal of 125434252303521 is 125303252434521.

It is not a de Polignac number, because 125434252303521 - 2¹⁵ = 125434252270753 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125434252307521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18741565 + ... + 24538026.

It is an arithmetic number, because the mean of its divisors is an integer number (6180325737600).

Almost surely, 2^{125434252303521} is an apocalyptic number.

It is an amenable number.

125434252303521 is a deficient number, since it is larger than the sum of its proper divisors (72336171299679).

125434252303521 is a wasteful number, since it uses less digits than its factorization.

125434252303521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43284389.

The product of its (nonzero) digits is 864000, while the sum is 42.

The spelling of 125434252303521 in words is "one hundred twenty-five trillion, four hundred thirty-four billion, two hundred fifty-two million, three hundred three thousand, five hundred twenty-one".